Match the items in column I with the correct choices in column II. Column I Column II 1 . Soft iron a. magnetic needle 2 . Steel b. Alnico 3 . Used in large computers c. ferrite magnet 4 . Magnet made from a mixture of iron oxide and barium oxide d. permanent magnet 5 . Magnet made from a mixture of aluminium, nickel and cobalt. e. magnetic tapes f. magnetic games g. ceramic magnet h. directive property i. temporary magnet

1 . Soft iron i. temporary magnet Explanation The materials retain their magnetism for short period are called temporary magnets. Soft iron is used in making electromagnet which acts as a strong magnet until current flows through the coil. It loses its magnetism once the current stops flowing through circuit. 2 . Steel a. magnetic needle d. permanent magnet Explanation The materials retain their magnetism permanently are called permanent magnets. Steel is used in making permanent magnet and magnetic needle. 3 . Used in large computers e. magnetic tapes Explanation Magnetic tapes are used in large computers to store the data in the form of digital information. These are inexpensive. 4 . magnet made from a mixture of iron oxide and barium oxide c. ferrite magnets g. ceramic magnet Explanation Ferrite magnets or ceramic magnets are formed by a mixture of iron oxide and barium oxide. Such magnets are difficult to demagnetize and are used to make permanent magnets. 5 . magnet made from a mixture of aluminium, nickel and cobalt. b. Alnico Explanation Alnico is an abbreviation, which is used for an alloy made up of Aluminium, Nickel, and Cobalt. It is an alloy, which is ferromagnetic substances. These alloys also contain titanium and copper sometimes. Permanent magnets can be made from these materials. Column I Column II 1 . Soft iron i. temporary magnets 2 . Steel a. magnetic needle d. permanent magnet 3 . used in large computers e. magnetic tapes 4 . magnet made from a mixture of iron oxide and barium oxide c. ferrite magnets g. ceramic magnet 5 . magnet made from a mixture of aluminum, nickel and cobalt. b. Alnico f. magnetic games h. directive property

EASY

Earn 100

Which are artificial magnets?

Important Questions on Magnetism

MEDIUM

Science>Physics>Magnetism>Magnet and Its Types

Geeta wants to clean metallic as well as non-metallic junk from her storeroom. She is confused between using a electromagnet and a bar magnet. Suggest her a way. What will happen if she does not follow your suggestion?

EASY

Science>Physics>Magnetism>Magnet and Its Types

In which of the following a permanent magnet is not used?

MEDIUM

Science>Physics>Magnetism>Magnet and Its Types

How can you prepare permanent magnet?

EASY

Science>Physics>Magnetism>Magnet and Its Types

Which one of these is used to make a permanent magnet?

EASY

Science>Physics>Magnetism>Magnet and Its Types

What are artificial magnets examples?

MEDIUM

Science>Physics>Magnetism>Magnet and Its Types

How does temporary and permanent magnets differ from each other?

EASY

Science>Physics>Magnetism>Magnet and Its Types

Define a temporary magnet.

EASY

Science>Physics>Magnetism>Magnet and Its Types

State two advantages of an electromagnet over a permanent magnet.

EASY

Science>Physics>Magnetism>Magnet and Its Types

Which is stronger artificial or natural magnet?

EASY

Science>Physics>Magnetism>Magnet and Its Types

Define a temporary magnet.

EASY

Science>Physics>Magnetism>Magnet and Its Types

List the difference between permanent and temporary magnets.

EASY

Science>Physics>Magnetism>Magnet and Its Types

What is the difference between natural magnet and artificial magnet ?

EASY

Science>Physics>Magnetism>Magnet and Its Types

Match the items in column I with the correct choices in column II.

Column I	Column II
$1$ . Soft iron	a. magnetic needle
$2$ . Steel	b. Alnico
$3$ . Used in large computers	c. ferrite magnet
$4$ . Magnet made from a mixture of iron oxide and barium oxide	d. permanent magnet
$5$ . Magnet made from a mixture of aluminium, nickel and cobalt.	e. magnetic tapes
	f. magnetic games
	g. ceramic magnet
	h. directive property
	i. temporary magnet